Server respone very very late

Hi there,

I have configured a Linux Redhat8.0 box.
This has two network cards dealing with
two different domains. Now the problems
is this when some body try to login it
takes so much time to authenticate.
This happen with all services like FTP, TELNET,
RLOGIN, SSH, etc. Server also response very slow
to some other services.There is no error message in
/var/log/message.
any idea? What would be the problem?.

Thanks
Khan

Are you running a lot of servers? Can you post the output of:
#ps -e

x86

Gentoo Linux 1.4 (2.6.5-mm1) / FreeBSD Unix 4.9 - Pentium M 1.40GHz -
512 MB - 40 GB - 14" - 4.5-4.9 lbs - CD-RW/DVD-ROM - Intel
PRO/1000 Gigabit Ethernet - Intel PRO/Wireless Network Connection
802.11b

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Khan <khalid418@yahoo.com> wrote:
> Hi there,

> I have configured a Linux Redhat8.0 box.
> This has two network cards dealing with
> two different domains. Now the problems
> is this when some body try to login it
> takes so much time to authenticate.
> This happen with all services like FTP, TELNET,
> RLOGIN, SSH, etc. Server also response very slow
> to some other services.There is no error message in
> /var/log/message.
> any idea? What would be the problem?.

Sounds like a (reverse) DNS lookup problem, either configure a
working DNS server (www.tldp.org DNS Howto), try putting name/IP
in /etc/hosts or try using the IPs instead of names.

--
Michael Heiming (GPG-Key ID: 0xEDD27B94)

Remove +SIGNS and www. if you expect an answer, sorry for
inconvenience, but I get tons of spam.
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On 19 Apr 2004 15:15:45 -0700, Khan <khalid418@yahoo.com> wrote:
> Hi there,
>
> I have configured a Linux Redhat8.0 box.
> This has two network cards dealing with
> two different domains. Now the problems
> is this when some body try to login it
> takes so much time to authenticate.
> This happen with all services like FTP, TELNET,
> RLOGIN, SSH, etc. Server also response very slow
> to some other services.There is no error message in
> /var/log/message.
> any idea? What would be the problem?.

That is usually due to DNS timeout (trouble resolving names for connecting
IP's). It use to be enough to put names for IP's in /etc/hosts, but
systems now also try to verify with DNS. I run a caching nameserver with
forward and reverse zones added for my LAN, but at least make sure that
any nameservers are only in /etc/resolv.conf when actively connected.

--
David Efflandt - All spam ignored http://www.de-srv.com/

Michael Heiming <michael+USENET@www.heiming.de> said:
>Khan <khalid418@yahoo.com> wrote:
>> I have configured a Linux Redhat8.0 box.
>> This has two network cards dealing with
>> two different domains. Now the problems
>> is this when some body try to login it
>> takes so much time to authenticate.

>Sounds like a (reverse) DNS lookup problem, either configure a
>working DNS server (www.tldp.org DNS Howto), try putting name/IP
>in /etc/hosts or try using the IPs instead of names.

The other possibility, in addition to DNS, could be that your machine
is doing ident queries which are being blocked on the clients.

The DNS problem is the more probable one, though.
--
Wolf a.k.a. Juha Laiho Espoo, Finland
(GC 3.0) GIT d- s+: a C++ ULSH++++$ P++@ L+++ E- W+$@ N++ !K w !O !M V
PS(+) PE Y+ PGP(+) t- 5 !X R !tv b+ !DI D G e+ h---- r+++ y++++
"...cancel my subscription to the resurrection!" (Jim Morrison)